ContractorAI is an AI estimating, invoicing and CRM app for contractors, available for iPhone and iPad. ContractorAI's HVAC estimate calculator prices an HVAC install from the house and the system. Add rooms with their size, windows and sun exposure, choose insulation quality and climate, pick a split system or mini-split and the number of zones, add duct runs, line sets and condensate drains, then set your labor rate and markup. You get an itemized HVAC estimate you can send from your phone.
Want to try it first? The free HVAC calculator runs in your browser. Read our guide: HVAC pricing guide.
HVAC ESTIMATING PROBLEMS
Room sizes, windows, exposure and insulation all affect the system you quote. Collecting them on paper is slow.
Supply and return runs, elbows and takeoffs add material and labor that often get missed.
Condensers, air handlers, mini-split heads, line sets and drains each need their own line on the quote.
When a system fails, homeowners want a price the same day. A clear, itemized quote is easier to approve.
HVAC CALCULATOR FEATURES
Built for HVAC contractors. Every number can be edited before you send the estimate.
Rooms with length, width, height, windows and exposure, plus insulation quality and climate.
Split systems and mini-splits with one to four zones.
Supply and return duct runs by length and size, with elbows and takeoffs.
Refrigerant line sets, condensate drains, air cleaners, UV lights, whole-house humidifiers and zoning.
Set your own hourly rate, material prices and profit margin so every estimate matches how you price work in your market.
Send a branded PDF, see when the customer views and approves it, then turn it into an invoice they can pay by card.
SIMPLE, TRANSPARENT PRICING
One app, every feature, every trade calculator. Start with a 7-day free trial on the monthly plan.
7-day free trial, then billed monthly.
About $28.33 a month, billed every 3 months.
One charge a year.
Every plan includes unlimited estimates, invoicing, the client CRM and all 20+ trade calculators. See the full pricing details.
Yes. The web HVAC calculator on contractorai.work is free to use with no signup. The ContractorAI app adds saved estimates, branded PDFs, customer approval, invoicing and a CRM for $34.99/month after a 7-day free trial.
Equipment for the system type and zones, duct runs with elbows and takeoffs, line sets, condensate drains, optional add-ons such as UV lights or humidifiers, and your labor and markup. You can edit every line before you send it.
No. The room inputs help you price the job, but equipment sizing for permits and design should still follow a proper Manual J load calculation.
ContractorAI costs $34.99 per month after a 7-day free trial. Field-service platforms cost more: Jobber starts at $49 per month and Housecall Pro at $79 per month on monthly billing, and ServiceTitan pricing is quote-based (checked September 2026).
Yes. ContractorAI has 20+ trade calculators, including roofing, HVAC, electrical, plumbing, painting, concrete, flooring, drywall, siding, decks and fencing, plus an AI estimate generator for jobs that don't fit a calculator.
More: ContractorAI FAQ · Compare ContractorAI with Jobber, Housecall Pro and others · All free calculators
HVAC SOFTWARE PRICING COMPARISON
How ContractorAI compares with other HVAC pricing software. Prices checked September 2026 on each vendor's website; confirm current pricing before you buy.
Looking for more options? Read our complete ServiceTitan alternatives comparison or explore AI for contractors guide.
Ready to send your next HVAC estimate faster? Try ContractorAI free for 7 days.
ContractorAI is an AI estimating, invoicing and CRM app for contractors, available for iPhone and iPad. 7-day free trial, then $34.99/month.
Prefer a browser? Use the web version.
